Apparatus for transferring grain



(No Model.)

-L. SMITH.

APPARATUSVPOR TR'A'NSFER'RI'NG GRAIN, aw. i No. 289,316. Patented Nov.27, 1883,

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. UNITED STATES PATENT Orricet LYMAN SMITH, OF KANSASOITY, MISSOURI.

APPARATUSFOR TRAINSFERRING GRAIN, 8w.

SPECIFICATION forming part of Letters Patent No. 289,316, dated November27, 1883.

Application filed October 31, 1883.

To all whom it may concern Be it known that I, LYMAN SMITH, of KansasCity, in the county of Jackson and State of Missouri, have inventedcertain new and useful Improvements in Pneumatic Apparatus for Lifting,Discharging, and Transferring Grain, &c., of which the following is aspecification.

. The present invention is adapted to the pneumatic system which isdescribed inthe following patents: No. 268,303, dated November 28, 1882,to L. La Rue Smith; No. 268,305, dated November 28, 1882, to LymanSmith;

and No. 279,034, dated June 5,1883, to Lyman Smith. In the system asdescribed in the said patents the grain is lifted in the supply orelevating pipe by the production of a partial vacuum in a chamber at theupper end of said pipe and discharged therefrom by gravity or the weightof the grain.

My invention has for its object the facilitating of the discharge ofgrain by gravity, and to remove all atmospheric resistance to suchdischarge.

The essential feature of my present invention is the closing of theupper valve, or that between the vacuum-chamber and the eduction-tube,by the admission of atmospheric air under it before the lower orgrain-discharge valve opens or begins to open, so that the grain beforethe beginning of the discharge is removed from the influence of thevacuum, and that there can be no admission of air at the point of exitof the grain to impede the discharge. a

Figure l is a vertical longitudinal section 0 the vacuum chamber, graineduction tubes, and appendages. Fig. 2 shows in exterior elevation adifferent arrangement of the valveconnections. Fig. 3 is an enlargedview, showing the construction of the lower or discharge valves.

(Ne model.)

springs 9 being to force out the ring and rubber. A stop, 2', on theeduction-tubef, and a similar stop, t", on the inside of the metallicring h, by their engagement prevent the projection of the rings from therecess.

It will be understood that when the discharge-valve k is horizontal, orin the position shown at the right of Fig. 3, the rubber ring is forcedup fully into its recess; but that when the discharge-valve begins tomove or assume an incline by the weight of grain thereon the rubber ringfollows it up, still for a time keeping the discharge-valve closed. Themoment the discharge-valve has moved, but be fore it has in any degreeopened, the air-valve c has been allowed to descend and its opening 10made to register, or partly register, with the openings in its guard atand the opening y in the wall of the eduction-tube, so that the rush ofair from without instantly closes the upper valve, 2. The valve 2 istherefore closed before the discharge-valve has begun to open, and noair can enter at the discharge-valve to fill the vacuum from below, andthus impede the discharge of grain by atmospheric pressure.

It is apparent that the object sought to be attained may be effected inother waysas,

for instance, by putting a flexible or yielding face on thedischarge-valve-and I do not wish to restrict my invention to anyparticular devices for accomplishing the end in view.

Having described my invention, I claim 1. In a system of pneumaticelevation, dis charge, or transfer of grain, &c., a method whichconsists of admitting air above the mass to be discharged before thecommencement of the discharge, substantially-as set forth.

2. In a system of pneumatic elevation, discharge, or transfer of grain,'&c., a method which consists of closing communication between theexhauster and the mass to be dis- Similar letters of reference indicatesimilar parts in the respective figures.

The lower end of each of the eduction-tubes 45 f f isprovidedwitharecessed flange, 9, within charged before the commencement of thedischarge, substantially as setforth.

3. In a system of pneumatic elevation, dis charge, or transfer of grain,&c., the combination of a vacuum-chamber, eduction-tubes, upper valve,2, air-valves, pivoted dischargevalve, connections between thedischargevalve and the air-valves, and a cushion or yielding recess ofthe flange g, the tendency of the face interposed between the bottoms ofthe eduction-tubes and the discharge-valve, substantially as set forth.

4:. The eduction-tubes and pivoted duplex discharge-valve, combined witha cushion or 5 yielding face interposed between the bottoms of theeduction-tubes and the discharge-valve, substantially as set forth.

5. The eduction-tubes f, having the recessed flanges rubber rings h, andsprings g, com- IO bined with the pivoted duplex discharge-valve k,substantially as set forth.

6. The eduction-tubes f, having the recessed flanges g and stops 6. themetallic rings h, having stops i, the rubber rings h, and the springs 9,combined with the pivoted duplex discharge- I 5 valve 70, substantiallyas set forth.

In testimony whereof I have hereunte set my hand this 31st of Uotolwr.A. D. 1883.

LYMAN SMITH. \Vitnesses:

PHILIP MAURO, GEORGE H. HOWARD.

